Future generations of civil aircrafts and unconventional unmanned configurations demand for innovative structural concepts to improve the structural performance, and thus reduce the structural weight, but also to allow possible material couplings to be made. Static and dynamic aeroelastic stability can be altered by these couplings. It is therefore necessary to use an accurate and computationally efficient beam model during the preliminary design phase. A stiffened box, made of isotropic material, but with the stiffeners oriented so that they originate the expected bending/torsion coupling, is considered in the present work. The overall equivalent bending, torsional and coupled stiffness is derived by means of homogenization of the shell skin and of the stiffener plate stiffness. A new equivalent homogeneous orthotropic material is determined and introduced into the equivalent plate configuration. The accuracy of the simplified beam model is demonstrated by the application of structural topology optimization technique by means of Altair Optistruct. Good agreement has been found between the theoretical simplified beam model and numerical analysis.


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    Titel :

    Application of Structural Topology Optimization to Couple Thin-Walled Stiffened Box-Beams


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:
    Cestino, Enrico (Autor:in) / Danzi, Francesco (Autor:in) / Pennella, Francesco (Autor:in) / Frulla, Giacomo (Autor:in) / Piana, Paolo (Autor:in) / Duella, Renzo (Autor:in)

    Kongress:

    AeroTech Congress & Exhibition ; 2017



    Erscheinungsdatum :

    2017-09-19




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch


    Schlagwörter :


    Aerothermoelastic Analysis and Optimization of Stiffened Thin-Walled Structures

    Halim, Lenard J. / Sahu, Sejal / Kennedy, Graeme et al. | AIAA | 2022


    Topology optimization of thin-walled structural members for crashworthiness

    Yohei, Tsuganezawa / Kohei, Yuge | Tema Archiv | 2006



    Elastic Buckling of Thin-Walled Structural Components with Edge-Stiffened Holes

    Moen, C. / Yu, C. / American Institute of Aeronautics and Astronautics | British Library Conference Proceedings | 2010


    Aeroelastic Topology Optimization of Blade-Stiffened Panels

    Stanford, Bret / Beran, Philip S. / Bhatia, Manav | AIAA | 2013